45-3/45-4 - Differential pressure regulators with closing actuator - installation in the low-pressure line

The Type 45-3 (and 45-4) self-operated differential pressure regulators are designed to work in district heating systems, extended piping systems and industrial applications. The differential pressure to be controlled is transmitted to the spring-loaded operating diaphragm in the actuator and converted into a positioning force to move the valve plug. The regulators control the differential pressure according to the adjusted set point.

The Type 45-3 is a differential pressure regulators for installation in a outlet flow pipe with a fixed set point determined by the springs in the actuator.

The Type 45-4 is a differential pressure regulators for installation in a outet flow pipe with set point adjustable in wide range.

• Nominal diameters: DN15 to DN50
• Pressure classes: PN16 to PN25
• Materials: Red brass CC499K, Spheroidal graphite iron
• Temperature range: up to +150°C
• Differential pressure set points: 0.1 to 10 bar